11. 12: Echinoderms - Biology LibreTexts - adult echinodermata

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Phylum Echinodermata | Biology for Majors II adult echinodermata


Echinoderm is the common name given to any member of the phylum Echinodermata of marine animals. The adults are recognizable by their (usually five-point).

The Echinodermata are a major phylum of marine animals, and they provide many striking examples of inconsistencies between the apparent relationships of .

Adult echinoderms exhibit pentaradial symmetry and have a calcareous endoskeleton made of ossicles, although the early larval stages of all echinoderms have.

Echinoderm, any of a variety of invertebrate marine animals belonging to the phylum The adult sea lily is sessile, using tentacles growing from its arms to feed.